Material for liquid-crystal alignment film, liquid-crystal display element, process for its production and liquid-crystal display unit
This application is based on Japanese Patent Application No. 2001-212973 filed in Japan, the contents of which are incorporated hereinto by reference. A material for a liquid-crystal alignment film which comprises as a first polyamide a C3 to C10 alkyl ester of a polyamic acid whose acid anhydride r...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | This application is based on Japanese Patent Application No. 2001-212973 filed in Japan, the contents of which are incorporated hereinto by reference.
A material for a liquid-crystal alignment film which comprises as a first polyamide a C3 to C10 alkyl ester of a polyamic acid whose acid anhydride residual group is any of: and as a second polyamide a C3 to C10 alkyl ester of a polyamic acid whose acid anhydride residual group is: is provided.The use of this material materializes a liquid-crystal alignment film having a high pre-tilt angle of molecules to the substrate, and having superiority in respect of electrical properties such as voltage holding ratio and residual DC voltage, adherence to substrates, printability, and step-covering properties. |
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